problems that do arise. the rules also set standards for the safe production and harvesting of fruits and vegetables making sure workers wash their hands for example. it would focus on high risk areas like agricultural water, equipment, and keeping dmesty kated and wild animals out of fields. >> what these rules are going to look at are microbial hazards, so the pathogens that cause people to get sick when their food is contaminated. things like e-coli, listeria, salmonella, those types of food borne illnesses. >> reporter: the goal is to make it easier for producers to track down the cause of problems should they occur and help the fda act more quickly to shut them down. the agency says these rules build on existing voluntary industry guidelines. they won't be final until sometime after the four-month period allowed for public comment. the big issue here, food advocates say, is making sure the fda has enough resources to be able to enforce these rules once they become final. that means money for things like inspectors. athena jones, cnn, washington.